The Watch What Happens: Live star had a mark on his lip checked out at the urging of his friend Kelly Ripa and her husband Mark Consuelos, and a specialist confirmed it was a melanoma.

He said: “I had a black dot on my bottom lip and you and I were at a party for Anderson’s [Cooper] mum in April, and you said, ‘You have a black dot on your lip, I don’t think that’s something good.'”

“It was melanoma and they removed it, and I just want to thank you because you were so dogmatic,” he continued.

"The lip heals very well and I really had a chunk removed out of it.”

Andy Cohen (Image: Bravo)

Andy was guest-hosting Live With Kelly on Friday when he revealed the news, but he didn't say when he was diagnosed or whether he has finished treatment, but the 48-year-old star - a self-proclaimed "tanorexic" - insisted he is doing well.

Both he and Kelly stressed the importance of checking the skin as the 46-year-old beauty admitted Andy was the third friend of hers who she had urged to have a suspicious mark looked at by doctors.

Andy recently admitted he is open to having a child and thinks it is the "closest" he's ever come to wanting a family of his own.

Discussing how he talks about his loneliness and wanting more out of life in his new autobiography, 'Superficial', he said: "I am the least introspective person typically, but the course of writing this diary, actually, for three years has made me think about things in a totally different way.

(Image: WENN)

"[I'm considering] opening myself up to love and a relationship and maybe a kid. I think I'm closer to that spot than I ever was.

"I feel like I can just do it."

And the presenter admitted "everything's great" in his relationship with a mystery man at the moment.

He said: "I put the pen down in May of this year because I'm sitting there writing at Memorial Day, and I was looking at this guy.

"I started to get emotionally exhausted reporting on my life kind of, and I said, 'I have to go live it. I've got to go do this. There's this great guy here.'"